CN108067606A - It is a kind of using the sand mold frock of paraffin model and casting production method - Google Patents
It is a kind of using the sand mold frock of paraffin model and casting production method Download PDFInfo
- Publication number
- CN108067606A CN108067606A CN201810143811.5A CN201810143811A CN108067606A CN 108067606 A CN108067606 A CN 108067606A CN 201810143811 A CN201810143811 A CN 201810143811A CN 108067606 A CN108067606 A CN 108067606A
- Authority
- CN
- China
- Prior art keywords
- tablet
- paraffin model
- paraffin
- negative
- sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
Abstract
The invention discloses use the sand mold frock of paraffin model and casting production method, negative-pressure flask including vacuum-pumping, tablet, paraffin model, paraffin model outer surface coating refractory coating, negative-pressure flask is positioned over washer, paraffin model is equipped with casting system and venthole wax column, tablet is equipped with several through holes, negative-pressure flask is positioned on tablet, the dried paraffin model of fireproof coating is arranged on inside sandbox and is positioned on tablet, the tablet outer side covers plastic film, the casting system of the paraffin model and the end of venthole wax column are alignd with the lead to the hole site on tablet, the molding sand layer containing binding agent is covered in paraffin model outer surface, dry sand is filled outside the molding sand layer that paraffin model in negative-pressure flask contains binding agent, it is sealed in dry sand top surface plastic covering film or steel construction bottom plate.The present invention can simplify shell processed, dewaxing and roasting technique flow, improve production efficiency, reduce cost of labor and energy consumption, and product quality stability is high.
Description
Technical field
The present invention relates to sand casting modeling technology areas more particularly to a kind of using the sand mold frock of paraffin model and casting
Part production method.
Background technology
The paraffin molding of the prior art makes model using paraffin, covers number coating to model surface and contains bonding
The molding sand of agent hardens arenaceous shell with to make the arenaceous shell of 10mm or so, then right then using steam by paraffin melting abjection
Shell carries out drying sintering, then casts.The paraffin moulding of the prior art has the drawback that：Complex technical process needs
A large amount of artificial and energy are consumed, less efficient, cost is higher；Normal pressure is cast, and molten metal mobility is limited, thin-wall complicated casting
The production of casting needs to match somebody with somebody shell into the high temperature for burning hundreds of degree, and waste of energy, product is easily deformed generation defective work.
The content of the invention
The present invention provides a kind of sand mold frock using paraffin model aiming at deficiencies of the prior art；
The present invention simplifies shell processed, dewaxing and roasting technique flow, improves production efficiency, reduces cost of labor, energy consumption is reduced, with sandbox
Negative pressure ventilation structure carries out vacuum pumping in dewaxing process and casting cycle, forms negative pressure, accelerating type intracavitary gas in cavity
Body discharges, and increases atmospheric pressure again to molten metal, so as to improve liquid metal filling ability, ensures that product quality is stablized
Property.
The present invention also provides a kind of sand-cast production methods using paraffin model.
The present invention solve technical problem technical solution be：
A kind of sand mold frock using paraffin model, negative-pressure flask, tablet, paraffin model including vacuum-pumping, paraffin
Model outer surface coating refractory coating, negative-pressure flask are positioned over washer, and paraffin model is equipped with casting system and venthole wax
Column, tablet are equipped with several through holes, and negative-pressure flask is positioned on tablet, and the dried paraffin model of fireproof coating is arranged in sandbox
Portion is simultaneously positioned on tablet, the tablet outer side covers plastic film, the casting system of the paraffin model and venthole wax column
End it is corresponding with the lead to the hole site on tablet, paraffin model outer surface cover the molding sand layer containing binding agent, in negative pressure sand
Paraffin model in case contains filling dry sand outside the molding sand layer of binding agent, at dry sand top surface plastic covering film or steel construction bottom
Plate is sealed.
The negative-pressure flask of the vacuum-pumping is vacuumized using pump-line or steel wire isolation molding sand realization, and sandbox is bottomless
Uncovered
A diameter of 1-100mm of paraffin model venthole wax column.
Through-hole diameter on the tablet is 1-100mm.
The thickness of plastic film is 0.01-0.5mm.
The thickness containing binder-type layer of sand is 1-100mm.
External dry sand is the hot sand of 50-500 DEG C of temperature.
A kind of sand mold production method using paraffin model comprises the following steps：
1) paraffin model is made using mold or processing method；
2) paraffin model is subjected to assembling casting system and the venthole of diameter 1-100mm；
3) to paraffin model outer surface coating refractory coating；
4) negative-pressure flask of vacuum-pumping is made, the negative-pressure flask utilizes pump-line or steel wire isolation molding sand and real
Existing vacuumizing function, the bottomless uncovered of negative-pressure flask；
5) tablet of negative pressure can be taken out by making, and the through hole of several diameter 1-100mm is arranged on tablet；
6) plastic film that cladding thickness is 0.01-0.5mm on tablet；
7) the dried paraffin model of fireproof coating is positioned on tablet, the casting system of paraffin model and venthole wax
The end of column is corresponding with the through hole on tablet；
8) negative-pressure flask is positioned on tablet, paraffin model is positioned over inside sandbox；
9) the molding sand layer containing binding agent, thickness 1-100mm are covered in paraffin model outer surface；
10) the molding sand layer containing binding agent is hardened；
11) dry sand is put into sandbox；
12) it is sealed in dry sand top surface plastic covering film or steel construction bottom plate；
13) thermal medium is passed through into sandbox by bottom hole or heating and melting is carried out to paraffin model using hot dry sand,
Liquid paraffin is made to be flowed out by through hole, realizes dewaxing and arenaceous shell drying hardening；
14) it is positioned over after pumping negative pressure, molding mould turnover being carried out to negative-pressure flask on level land or tablet；
15) complete to cast by casting system casting metals liquid；
16) unpack and clear up casting.
The thermal medium of the step 13) uses temperature as 80-500 DEG C of hot wind.
Beneficial effects of the present invention：
1. the present invention can simplify shell processed, dewaxing and roasting technique flow, production efficiency is improved, reduces cost of labor and energy
Consumption；Shell flow processed becomes one time from dip-coating binding agent stucco hardening several times and adds in the hardening of binding agent molding sand, and technique simplifies；By type
Shell is put into vaporium dewaxing, is roasted and then buried case casting subsequently into roaster and change into the dewaxing directly in sandbox, do
It is dry, simplify technological process, and flow line production easy to implement；Production efficiency is improved, reduces cost of labor；
2. the present invention is cast using negative pressure, molten metal mobility is improved, the production of thin-walled and intricate casting is made to be not required to high temperature
Shell is roasted, deformation is small, product quality stability is high.
3. by being equipped with negative pressure ventilation structure in sandbox, vacuum pumping is carried out in dewaxing process and casting cycle, is made
Negative pressure is formed in cavity, so as to which accelerating type intracavity gas discharge, atmospheric pressure is increased again to molten metal, so as to improve gold
Belong to liquid mold-filling capacity, reduce castability defect, ensure product quality.
Description of the drawings
Fig. 1 schematic structural views of the invention.
Specific embodiment
For a better understanding of the present invention, embodiments of the present invention are explained in detail below in conjunction with the accompanying drawings.
With reference to Fig. 1, a kind of sand mold frock using paraffin model, negative-pressure flask 3, tablet 7, paraffin including vacuum-pumping
Model 1, paraffin model outer surface coating refractory coating, negative-pressure flask are positioned over washer 7, and paraffin model is equipped with casting system
The end of the venthole wax column 12 of 11 and diameter 1-100mm, venthole wax column and running gate system connection paraffin model reaches sandbox
Top is connected with plastic film, and tablet is equipped with the through hole 71 of several diameter 1-100mm, and negative-pressure flask is positioned on tablet, resistance to
The fiery dried paraffin model of coating is arranged on inside sandbox and is positioned on tablet, the tablet outer side covers thickness 0.01-
Through hole position on the plastic film 6 of 0.5mm thickness, the casting system of the paraffin model and the end and tablet of venthole wax column
Correspondence is put, the molding sand layer 2 of the molding sand of binding agent, heating process are contained in paraffin model outer surface and venthole wax column outer side covers
Middle liquid paraffin is flowed out by casting system 11 and venthole wax column 12, and venthole wax column 12 connects with casting system 11 or with leading to
Hole 71 connects.The thickness of the molding sand layer is 1-100mm, and dry sand 4, dry sand 4 are filled outside the paraffin model in negative-pressure flask 3
The 3 of outside are sealed in dry sand top surface plastic covering film 5 or steel construction bottom plate.
The negative-pressure flask of the vacuum-pumping is realized using pump-line 8 or steel wire the isolation molding sand set on sandbox and taken out
Vacuum, the bottomless uncovered of sandbox.
A diameter of 1-100mm of paraffin model venthole wax column.
Through-hole diameter on the tablet is 1-100mm.
The thickness of plastic film is 0.01-0.5mm.
A kind of sand mold production method using paraffin model comprises the following steps：
1) paraffin model is made using mold or processing method；
2) paraffin model is subjected to assembling casting system and the venthole wax column of diameter 1-100mm；
3) to paraffin model outer surface coating refractory coating；
4) negative-pressure flask of vacuum-pumping is made, the negative-pressure flask utilizes pump-line or steel wire isolation molding sand and real
Existing vacuumizing function, the bottomless uncovered of negative-pressure flask；
5) make can negative pressure tablet, the through hole of several diameter 1-100mm is arranged on tablet；
6) plastic film that cladding thickness is 0.01-0.5mm on tablet；
7) the dried paraffin model of fireproof coating is positioned on tablet, the casting system of paraffin model and venthole wax
It aligns with the through hole on tablet the end of column；
8) negative-pressure flask is positioned on tablet, paraffin model is positioned over inside sandbox；
9) the molding sand layer containing binding agent, thickness 1-100mm are covered in paraffin model outer surface；
10) the molding sand layer containing binding agent is hardened；
11) dry sand is put into sandbox；
12) it is sealed in dry sand top surface plastic covering film or steel construction bottom plate；
13) thermal medium is passed through into sandbox by bottom hole or carries out heating to paraffin model using hot dry sand and is melted
Change, liquid paraffin is made to be flowed out by venthole and dead head, realize dewaxing and arenaceous shell drying hardening；
14) it is positioned over after pumping negative pressure, molding mould turnover being carried out to negative-pressure flask on level land or tablet；
15) complete to cast by casting system casting metals liquid；
16) unpack and clear up casting.
The thermal medium of the step 13) uses temperature as 80-500 DEG C of hot wind or other mode of heatings.
Dry sand is the hot dry sand of 50-500 DEG C of temperature.
Although the present invention has shown that and describes the embodiment of the present invention, for those of ordinary skill in the art, can with
A variety of change, modification, replacement and modification can be carried out in the case where not departing from the principle and spirit of the invention to these embodiments by understanding,
Within the claims protection domain for belonging to the present invention.
Claims (9)
1. a kind of sand mold frock using paraffin model, it is characterized in that, negative-pressure flask, tablet, paraffin mould including vacuum-pumping
Type, paraffin model outer surface coating refractory coating, negative-pressure flask are positioned over washer, and paraffin model is equipped with casting system and goes out
Stomata wax column, tablet are equipped with several through holes, and negative-pressure flask is positioned on tablet, and the dried paraffin model of fireproof coating is arranged on
Inside sandbox and it is positioned on tablet, the tablet outer side covers plastic film, the casting system and outlet of the paraffin model
The end of hole wax column is corresponding with the lead to the hole site on tablet, and the molding sand layer containing binding agent is covered in paraffin model outer surface,
Paraffin model in negative-pressure flask contains filling dry sand outside the molding sand layer of binding agent, in dry sand top surface plastic covering film or steel
Structure base slab is sealed.
2. a kind of sand mold frock using paraffin model as described in claim 1, it is characterized in that, the negative pressure of the vacuum-pumping
Sandbox is vacuumized using pump-line or steel wire isolation molding sand realization, the bottomless uncovered of sandbox.
3. a kind of sand mold frock using paraffin model as described in claim 1, it is characterized in that, the paraffin model venthole
A diameter of 1-100mm.
4. a kind of sand mold frock using paraffin model as described in claim 1, it is characterized in that, the through hole on the tablet is straight
Footpath is 1-100mm.
5. a kind of sand mold frock using paraffin model as described in claim 1, it is characterized in that, the thickness of the plastic film
For 0.01-0.5mm.
6. a kind of sand mold frock using paraffin model as described in claim 1, it is characterized in that, the thickness of the molding sand layer is
1-100mm。
7. a kind of sand mold frock using paraffin model as described in claim 1, it is characterized in that, the dry sand is temperature 50-
500 DEG C of hot sand.
8. it is a kind of using any one of claim 1 to 7 using the method for the sand mold frock making sand-cast of paraffin model, it is special
Sign is to comprise the following steps：
1) paraffin model is made using mold or processing method；
2) paraffin model is subjected to assembling casting system and the venthole of diameter 1-100mm；
3) to paraffin model outer surface coating refractory coating；
4) negative-pressure flask of vacuum-pumping is made, the negative-pressure flask is using pump-line or steel wire isolation molding sand and realizes pumping
Vacuum function, the bottomless uncovered of negative-pressure flask；
5) make can negative pressure tablet, the through hole of several diameter 1-100mm is arranged on tablet；
6) plastic film that cladding thickness is 0.01-0.5mm on tablet；
7) the dried paraffin model of fireproof coating is positioned on tablet, the casting system of paraffin model and venthole wax column
End is corresponding with the through hole on tablet；
8) negative-pressure flask is positioned on tablet, paraffin model is positioned over inside sandbox；
9) the molding sand layer containing binding agent, thickness 1-100mm are covered in paraffin model outer surface；
10) molding sand layer is hardened；
11) dry sand is put into sandbox；
12) it is sealed in dry sand top surface plastic covering film or steel construction bottom plate；
13) thermal medium is passed through into sandbox by bottom hole or carries out heating to paraffin model using the hot sand outside arenaceous shell and is melted
Change, liquid paraffin is made to be flowed out by through hole, realize dewaxing and arenaceous shell drying hardening；
14) it is positioned over after pumping negative pressure, molding mould turnover being carried out to negative-pressure flask on level land or tablet；
15) complete to cast by casting system casting metals liquid；
16) unpack and clear up casting.
9. a kind of method of sand mold frock making sand-cast using paraffin model as claimed in claim 8, it is characterized in that,
The thermal medium of the step 13) uses temperature as 80-500 DEG C of hot wind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810143811.5A CN108067606A (en) | 2018-02-12 | 2018-02-12 | It is a kind of using the sand mold frock of paraffin model and casting production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810143811.5A CN108067606A (en) | 2018-02-12 | 2018-02-12 | It is a kind of using the sand mold frock of paraffin model and casting production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108067606A true CN108067606A (en) | 2018-05-25 |
Family
ID=62155187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810143811.5A Withdrawn CN108067606A (en) | 2018-02-12 | 2018-02-12 | It is a kind of using the sand mold frock of paraffin model and casting production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108067606A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559597A (en) * | 2019-01-10 | 2019-04-02 | 河南工程学院 | A kind of vertical centrifugal paraffin casting machine |
| CN110773701A (en) * | 2019-11-21 | 2020-02-11 | 安徽亚太锚链制造有限公司 | Special buckle casting method for recovering mooring anchor chain |
| CN114260423A (en) * | 2020-12-01 | 2022-04-01 | 安阳市凯创科技有限公司 | Casting heat section treatment method for medium and large precision castings |
-
2018
- 2018-02-12 CN CN201810143811.5A patent/CN108067606A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559597A (en) * | 2019-01-10 | 2019-04-02 | 河南工程学院 | A kind of vertical centrifugal paraffin casting machine |
| CN110773701A (en) * | 2019-11-21 | 2020-02-11 | 安徽亚太锚链制造有限公司 | Special buckle casting method for recovering mooring anchor chain |
| CN114260423A (en) * | 2020-12-01 | 2022-04-01 | 安阳市凯创科技有限公司 | Casting heat section treatment method for medium and large precision castings |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180525 |
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| WW01 | Invention patent application withdrawn after publication |